Device to prevent rolling of bobbins



W. H. WAKEFIELD DEVICE TO PREVENT ROLLING 0F BO BBINS All; I 1, 1925.

Filed Feb. 25, 1924 /NVEN F WALTER hf WAKE/YEAH ATTORNEYS Patented Au 11, 1925.

uirn srATEs 1,549,238 PATENT orrics.

WALTER H. WAKEFIELD, F ORCESTER, MASSACHUSETTS, ASSIGNO'R T0 CROMPTON & KNOWLES LOOP/I WORKS, 0F WORCESTER, MASSACHUSETTS, A CORPORATION OF lvIASSACHUSETTS.

DEVICE TO PREVENT ROLLING OF BOBIBINS.

Application filed February 25, 1824;. Serial No. 694,883.

To all whom it may concern:

Be it known that I, \VALrn'a H. W KE- FIELD, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Device to Prevent Rolling of Bobbins, of which the following is a specification.

This inventionrelates to weft replenishing mechanism and more particularly to de vices for preventing the rolling of bobbins on their axes in such mechanism as they await transfer.

In one form of replenishing mechanism which has gone into extensive use the bobbins lie loosely in a plurality of vertical stacks or compartments so that the bobbins to be transferred may be selected according to the particular box which is active. In

such mechanism it has been found that if,

the yarn is fine so that comparatively few transfers a day are necessary, the bobbins roll on their own axesto such an extent that the free ends which lead to the thread holder become entangled with each other and break at the time of transfer.

Itis the principal object of my invention to prevent this objectionable rolling of the bobbins by providing each compartment with'a wall movable into engagement with the bobbins to restrain them against rotation.

A further object of my invention is to provide bobbin engaging means which shall be common to a plurality of bobbin compartments and so controlled that if a bobbin from any of the compartments is to be transferred the bobbin engaging device will be moved to release the bobbins so that they will be free to move downwardly in the compartment toward transfer position.

\Vith these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawing wherein I have shown one form'of my invention,

' Fig. 1 is an end elevation of part of a 50 replenishing mechanism having my invention applied thereto as viewed from the center of the loom,

Fig. 2 is a vertical section talgen on line- '2-2 of Fig. 1,

Fig. 3 is a section on line 33 of Fig. 1, and

Fig. 4 is a view similar to Fig. 3 but showing the bobbin engaging and restraining member in a different position.

Referring more particularly to the drawing it will be seen that I have provided a weft replenishing mechanism having a,

manner indicated in Patent No. 902,193.

The frame 10 has extending therefrom flanges 19 and 20 which form the outer boundaries of compartments (to be described more fully hereinafter), which receive the weft bobbins W and W. The mechanism thus far described may be of the usual form and for further reference as y to the operation thereof, see Patent No.

My invention has more particular reference to the movable wall or partition 30 which is positioned intermediate the flanges 19 and 20 and forms therewith compartments 31 and 32 in which bobbins W and W respectively are stacked. The upper part of the frame 10 is provided with an extension 33 from which depends a pin 34: arranged to extend into the top of the partition to form a pivotal connection therefor. The lower end of the partition is provided with a bore which receives the upbent end 35 of a small rod 36 threaded or otherwise secured into the frame 10 as at 37. The upbent end 35 and the pin 34 are preferably in alignment and lie on the longitudinal axis of the wall or partition 30. To provide for turning the wall 30 about its pivots I may employ a cam plate 38 rigid therewith and connected to one end of a spring 39, the other end ofwhich is held by a pin 40 extending from the frame 10.

In order that the wall 30 may be moved to release the bobbinsof the con'ipartments partment is to be transferred I have pro vided the controllers l1 and 42 which ex- 31 and 32 whenever. a bobbin of either comtrad upwardly from slides 11 and 12 respectively and are so placed as to engage the cam plate 38 and move the sameto the right as viewed in Fig. 1. Controller ll is made somewhat higher than the controller l2 so that the vertical distance between the controllers and the cam plate will be the same. To compensate for irregularity in the sizes of bobbin heads I may cover the partition 30 with a yielding surface 43 such as rubber or leather. The controllers il and -42 are spaced below the cam surface 38 so as to engage the same on the last part of the upward motion of theslides 11V and 12.

Under normal conditions slides 11 and 12 are in lower position and spring 39 holds the wall or partition against the heads of the bobbins to restrain the same against rotation on their axes. hen exhaustion of weft is indicated by any of the shuttles correspond ing to the bobbins W and IV, one or the other of the slides 11 and 12 will be raised, the effect of which will be to oscillatethe partition about its axis against the action of spring 39 and'move the yielding surface of the wall away from the bobbins so that they will be free to fall toward transfer position.

At the time of transfer the slide which was raised will be lowered to normal position and the spring 39 will again move the wall 30 against the bobbins'to restrain their rotation.

From the foregoing it will be seen that I have provided a very simple means for restraining the bobbins of a plurality of compartments or guideways from 7 rolling by means of a device common to the compartments and so controlled as to release the bobbin whenever a bobbin is to be transferred from any of the compartments. It will be observed that the movable wall is effective to prevent rolling of bobbins in one as well as in two compartments, and I do not wish to be limited to the use of my invention in connection with a plurality of compartments or guideways. It will be further noted that the partition or wall 30 hasan angular motion so that the bobbins are acted upon to move longitudinally against the ends of the guideways as well as laterally.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing mechanism for looms, a pair of guideways for bobbins, a wall common to both guideways, and means to move said wall to engage the bobbins of each guideway.

2. In a weft replenishing mechanism for looms, a pair of guideways for bobbins, a wall common to both guideways and mounted for pivotal movement, and means to give said wall a pivotal movement to engage the bobbins of each guideway.

23, In a weft replenishing mechanism for looms. a pair of guicleways for bobbins, a partition between and common to both of said guideways, means defining a pivoted support for said artition to permit the same other part thereof moves into the other compartment to engage the bobbins in each compartment.

5. In a weft replenishing mechanism for looms, a pair of guideways for bobbins, a pivotally mounted wall between said guideways, and means under control of the re? plenishing mechanism to move said wall;

6. In a weft replenishing mechanism for looms, a pair of bobbin compartments, a bobbin engaging device movable about a fixed center and common to both compartments, and means under control of the weft replenishing mechanism to move said device into engagement with the bobbins of each compartment.

7. In a weft replenishing mechanism for looms, a pair of bobbin compartments, a bobbin discharge controllingmeans for each compartment, a member movable about a fixed center and common. to both compartments to engage the bobbins therein, and means operable from either of the bobbin discharge means to control the position of said member.

8. In a weft replenishing mechanism for looms, a pair of bobbin compartments, a

bobbin engaging pivotally mounted member between the compartments, and a bobbin release controlling device for each compartment, either of said releasing devices controlling the position of said pivotally mounted member.

9. In a weft replenishing mechanism for looms, a pair of bobbin compartments, each having a fixed wall, a partition between said compartments in contact withthe bobbins of each compartment and pressing the same against the fixed walls, a bobbin releasing device for each compartment, and means operable by either releasing device to move said partition out of pressing contact with the bobbins.

10. In a weft replenishing mechanism for looms, a pair of bobbin compartments, a movable partition betweeen and forming part of the compartments, and means to give said partition an angular motion with respect to the bobbins to move said partition into engagement with the bobbins of both compartments.

11. In a Weft replenishing mechanism for looms, a pair of bobbin compartments, a

movable partition between said compartments having portions to engage the bobbins of both compartments, and means to move WALTER H. lVAKEFIELD. 

